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More project information (wiring schematic, pictures, ....) on Instructables: https://www.instructables.com/id/Make...

You can buy the commercial launchpad here: (affiliate links)
Amazon.de: https://amzn.to/2DFB4b0

Parts list (incomplete, see Instructables for more, affiliate links):
Aliexpress:
WS2812 LEDs: https://s.click.aliexpress.com/e/_dZ4...
1x Arduino Nano: https://s.click.aliexpress.com/e/_dVf...
36x Tactile Switch: https://s.click.aliexpress.com/e/_dTz...
36x 1N4002 Diode: https://s.click.aliexpress.com/e/_dTz...
Ebay:
WS2812 LEDs: http://rover.ebay.com/rover/1/711-532...
1x Arduino Nano: http://rover.ebay.com/rover/1/711-532...
36x Tactile Switch: http://rover.ebay.com/rover/1/711-532...
36x 1N4002 Diode: http://rover.ebay.com/rover/1/711-532...
2x Perfboard: http://rover.ebay.com/rover/1/711-532...

In this episode of DIY or Buy I will be showing you how I created my own launchpad. That means I will show you how I combined a design idea with 3D Prints, WS2812 LEDs, tactile switches and an Arduino to create a proper MIDI instrument. While building I will also tell you a bit about a keyboard matrix and in the end determine what advantages the DIY Launchpad offers. Let's get started!

Websites which were shown during the video:
https://www.dribin.org/dave/keyboard/...
https://www.midi.org/specifications-o...
http://projectgus.github.io/hairless-...
https://playground.arduino.cc/code/ke...
https://github.com/FastLED/FastLED
https://www.tobias-erichsen.de/softwa...
https://www.image-line.com/flstudio/

Thanks to JLCPCB for sponsoring this video
Visit https://jlcpcb.com to get professional PCBs for low prices

Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod
(incompetech.com)